The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 23, 1982
Filed:
Feb. 25, 1981
Yutaka Kubota, Kawagoe, JP;
Hitoshi Sugimoto, Higashimatsuyama, JP;
Diesel Kiki Kabushiki Kaisha, Tokyo, JP;
Abstract
A control circuit for a glow plug assembly serving as an engine preheating means is designed so as to effect a temperature control in harmony with the specified position established by selective operation of a key switch having three switching positions, i.e., OFF, ON and START positions. The control circuit is capable of effecting three modes of operation: One is that, when the key switch is switched from OFF position to ON position, the glow plug assembly is energized to rapidly effect a preheating of the engine, and is deenergized when the temperature thereof reaches a predetermined value; Second is that, when the key switch is switched from ON position to START position, the voltage smaller than that at the time of the preheating is applied to the glow plug assembly to effect a first heat retention having substantially the same temperature as that of the aforesaid predetermined value; Third is that, when the key switch is switched from START position to ON position, power is intermittently fed to the glow plug assembly to effect a second heat retention having the temperature lower than or closer to the aforesaid predetermined value.